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Título
Determining engineering properties of ultra-high-performance fiber-reinforced geopolymer concrete modified with different waste materials
Autor
Facultad/Centro
Área de conocimiento
Título de la revista
PLOS ONE
Número de la revista
5
Cita Bibliográfica
Althoey F, Zaid O, Alsulamy S, Martı´nez- Garcı´a R, de Prado Gil J, Arbili MM (2023) Determining engineering properties of ultra-high- performance fiber-reinforced geopolymer concrete modified with different waste materials. PLoS ONE 18(5): e0285692.
Editorial
Public Library of Science
Fecha
2023
Resumen
[EN] Reprocessing solid waste materials is a low-cost method of preserving the environment,
conserving natural resources, and reducing raw material consumption. Developing ultra-
high-performance concrete materials requires an immense quantity of natural raw materials.
The current study seeks to tackle this issue by evaluating the effect of various discarded
materials, waste glass (GW), marble waste (MW), and waste rubber powder (WRP) as a
partial replacement of fine aggregates on the engineering properties of sustainable ultra-
high-performance fiber-reinforced geopolymer concrete (UHPGPC). Ten different mixtures
were developed as a partial substitute for fine aggregate, each containing 2% double-
hooked end steel fibers, 5%, 10%, and 15% GW, MW, and WRP. The present study
assessed the fresh, mechanical, and durability properties of UHPGPC. In addition, to evalu-
ate concrete development at the microscopic level due to the addition of GW, MW, and
WRP. Spectra of X-ray diffraction (XRD), thermogravimetric analysis (TGA), and mercury
intrusion (MIP) tests were conducted. The test results were compared to current trends and
procedures identified in the literature. According to the study, adding 15% marble waste and
15% waste rubber powder reduced ultra-high-performance geopolymer concrete’s strength,
durability, and microstructure properties. Even so, adding glass waste improved the proper-
ties, as the sample with 15% GW had the highest compressive strength of 179 MPa after 90
days. Furthermore, incorporating glass waste into the UHPGPC resulted in a good reaction
between the geopolymerization gel and the waste glass particles, enhancing strength prop-
erties and a packed microstructure. The inclusion of glass waste in the mix resulted in the
control of crystal-shaped humps of quartz and calcite, according to XRD spectra. During the
TGA analysis, the UHPGPC with 15% glass waste had the minimum weight loss (5.64%)
compared to other modified samples.
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